[from Simon Favre]
>Marc Ablaza wrote:
>...
>> Presently, our rules have restricted the use of "R" rated tires for vintage
>> racing. We only use street tires with an aspect ratio of not less than
>> 65%.
>
>You mean you don't allow street legal HR or VR rated tires? Most clubs
I think he means "R" compound. IE 'race' tires. Which sure seems
starnge to be restricted to Street tires on a Race car. Kinda
defeats the purpose.
In HMSA, for the B production group and Trans Am, we are retricted
to the Goodyear Sports Car Specials. Or a Hoosier. Both Bias bly.
No modern tires allowed.
>> There seems to be no problem with the smaller sports cars like TRs, MGBs,
>> MGAs, etc. The big problem lie with the American sports cars like the
>> Mustangs GT350s and the Corvettes. As far as I know, the Goodyear
>> Bluestreaks for these cars, available in the USA, have a lower aspect ratio
>> even if these are bias-ply tires
>
>The problem is that these cars have very wide wheels compared to the
>small cars. I would suggest that since the Goodyear Blue Streaks are a
>bias ply tire, and not street legal, that you just allow them as is.
>The 65 aspect ratio is reasonable for street legal radial tires, IMO. I
>think the original tires on these cars would have been 70 series if they
>were radials. These are getting somewhat harder to find now. Tire
>availability should also be considered.
I agree with Simon's comments. The Goodyears are the proper style
tire for these cars.
-------
Regards
Walt Boeninger - Nor Cal SAAC Web Site - http://www.norcal-saac.org
Email: walt@hpwrcxe.mayfield.hp.com 67 GT500 & Shelby T-A coupe/ 71 Boss 351
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